Embury mclean



E. McLEANL RAFFLE RETAINING FORM,

APPLICATION HLED MAR. a. 1919.

1 1,319,528. Patented 001. 21,1919.

WITNESS:

INVENTOR 1, A 2 JW Y I :W

UNITED STATns PATENT clar onf MB BX Y EA O B K XN, N W YO i filsfl fi T9TEE VEEGI F EB GQM eNY, or new YORK,'1\T. Y., n'oonrona'riq vor newyork.

BArrLE-niamumne roam.

Specification of Letters 2atent.

Pa ented t 1 9 Application filed Marchfl, 1919. Serial No. 230,281. 7

To all whom it may concern:

Be it known that I, EMBURY IVICLEAN, a citizen of the United States,residing in New York city, borough of Brooklyn, in the county of Kingsand State of New York, have invented certain new and useful Improvementsin Baffle-Retaining Forms, of which the following is a specification.

As is well understood, steam boilers of the water tube type are commonlyprovided with baffles extending across the boiler tubes for directingthe gases in a plurality of passes over the tubes. Such bafl'les may bemade, in whole or in part, of a plastic material, such as fireclaycement or asbestos. When such material is used for the battle, aretaining form of some kind must be used for giving the proper form tothe baffle while it is being prepared, and for maintaining the same inposition until the mate rial is set. Hitherto such forms have commonlybeen made of boards, the use of which, however, requires the expenditureof a good deal of time for fitting the boards around the boiler tubes,and the difficulty is in creased when some of the tubes are sprung outof position.

In accordance with my invention, retain ing forms having flexible wingsare used, the wings being provided with recesses adapted to receive theboiler tubes, the flexible wings readily bending around the tubes toconform to the contour thereof in case of a slight misfit. Standardforms for a given type of boiler may thus be used.

My invention will best be understood by reference to the accompanyingdrawing, in which Figure 1 is a side elevation, partially in section,illustrating a steam boiler of the water tube type, to which myinvention is applied; Fig. 2 is a perspective view, with certain partsin section, of a baffie extending across the water tubes, and aretaining form made in accordance with my invention adj acent to thebaffle; Fig. 3 is a detailed View of a retaining form for use with aninclined baffle; and Fig. 4 is a similar view for use with a verticalbaiile.

Referring, now, to the drawing, in which like reference charactersindicate like parts, 1 is the setting of the steam boiler, and 2 a steamand water drum disposed above the same. A bank of horizontally inclinedwater tubes 8 are connected at one end to a downtake header 4-, and atthe other end to an uptake header 5,the headers being nippled to theboiler at i and 5, respectively. In the boiler illustrated, a bridgewall 6 is located beneath the water tubes and a battle, indicated ingeneral by the reference numeral 7, extends from the top of the bridgewall 6 and is inclined rearwardly across the tubes 8. The baffle 7 isformed, in whole or in part, of plastic material,"such as cement, and ishere illustratedas formed in part of rows of fire bricks 8 and partiallyof plastic material 9, the plastic material being filled in betwcentherows of firebricks.

Now, in accordance with my invention, forms composed of sections againstwhich the plastic material of the battle wall may be formed and whichretain the baffle wall when so formed in position until the plasticmaterial is set are provided, the sections of the form being indicatedin general by the reference character 10, each of which sectionscomprises a substantially straight rigid member 11, to which are securedwings 12 of flexible material, such as thin sheet metal, formed at theiredges with recesses 13, which are preferably oval shaped, as shown inFig. 3, when the retaining form is to be used with an inclined baffle,such as that shown as extending upwardly from the bridge wall in Fig. 1.The form is inserted between the boiler tubes flatwise and is thenturned on edge, the boiler tubes being received in the openings 18 andthe edges of the wings surrounding the boiler tubes readily bendingaround the tubes, thus causing the wings to conform to the contour ofthe boiler tubes.

The edges of the sections meet and thus pro vide a continuous form.

Then the retaining form is to be used with a baffle disposed in a planeapproximately at right angles to the length of the tubes, such as thatshown depending from the wall in Fig. l at 7, the recesses in the wingsof the retaining form are preferably substantially semi-circular, asindicated in Fig. i at 13'.

In forming a battle against a form made in accordance with my invention,it will be understood that the rows of fire tiles which are to be usedin the bailies will first be inserted between the rows of boiler tubes,in the position to be occupied by the finished bafiie. The sectionalform made in accord ance with my invention will then be placed againstthe rows of bricks and the plastic material will be filled in betweenthe rows of bricks and the boiler tubes to complete the baflie.Ordinarily it will be necessary to use a form on only one side of thebaflle, as

indicated in Fig. 1, particularly when the bafile is inclined as thereshown, though it will, of course, be understood that a form may be.inserted on the other side of the bafile to retain the same in properposition until the bafile is set, if so desired.

lVhile I have herein shown and described one modification of myinvention, I do not desire to be limited to the exact arrangement shownand described, but seek to cover in the appended claims all thosemodifications which come within the true spirit and scope of myinvention.

What I claim and desire to secure by Letters Patent of the United Statesis:

1. A baflie retaining form comprising a straight rigid member havingflexible wings,

said wings being formed with recesses for the reception of boiler tubes.

2. A bafile retaining formcomprising a straight rigid member'havingflexible wings, said wings being formed with curved recesses.

3. A bafile retaining form comprising a straight rigid member havingflexible wings of sheet metal, said wings being formed with interveninrecesses.

4:. A ba e retaining form comprising a rigid member having flexibleprojectlng wings formed with recesses adapted to receive-boiler tubesupon which a bafile is to be built, the form being adapted to be inserted between the boiler tubes.

In testimony whereof, I have hereunto signed my name in the presence oftwo subscribing witnesses. V I

EMBURY McLEAN. Witnesses: f

ADELE S. EBERHARDT, DANN L. Woon.

Oopiu of thin patent my be obtained for five cents each, byaddressingthe Commissioner of Patents.

Washington, D. 0. r

